<?php
/**
 *
 *
 * Author: Zeon
 * Date: 2018/1/17
 * Created by Panxsoft.
 */
namespace App\Observers\Contract;

/**
 * 表示类清理的接口
 *
 * Interface ObserverCleanable
 * @package App\Observers\Contract
 */
interface ObserverCleanable
{
    /**
     * 需要清理的对象存储的字段
     *
     * @return array
     */
    public function keyCleanColumns(): array;
}
